Screen.



C. V. NILSSON.

SCREEN. I APPLICATION FILED 0012a, 1912.

1 79,575, Patented Nov. 25, 1913.

. 4. am VII/25501;

CARL VICTOR NILSSON, OF PHILADELPHIA, PENNSYLVANIA.

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Specification of Letters Patent.

Patented Nov. 25, 1913.

Application filed October 23, 1912. Serial No. 727,272.

To all whom it may concern:

. Be it known that I CARL V. NrLssoN, a citizen of the United Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Screens, of which the following is a specification.

My invention relates to improvements in screens, the object of the invention being to provide a screen which permits the flies on the inside of the room to escape to the outside, utilizing in the construction of the screen, overlapping sections of wire net-ting spaced apart, which exclude flies from the room yet provide an exit for them.

It is a well known fact that flies alighting upon a screen invariably walk up the screen, and my screen is so constructed that such movement of the flies will carry them out of the room.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claim.

In the accompanying drawings: Figure 1 is a view in elevation illustrating my improvements as applied to a window screen. Fig. 2 is a View in section on the line 2-2 of Fig. 1. Fig. 3 is a View in section on the line 3-3 of Fig. 1. Fig. 4 is an enlarged fragmentary elevation illustrating one of the spacing pins in operative position, and Fig. 5 is a. perspective view of one of the pins.

1 represents a frame in which in the present instance is shown as a window frame, but it is of course understood that my invention is not limited to any particular construction of frame, but may be used in any frame desired, either doors, windows, or other openings.

In the frame 1, two sect-ions 2 and 3 of wire mesh are secured, the upper section of wire mesh being preferably shorter than the lower section, and said sheets of a combined length greater than the height of the frame,

States, residing at' so that the sections of wire mesh overlap at a point adjacent the upper end of the frame. These sections are confined at their side edges within the frame 1, but between the side members of the frame at the overlapping port-ion of the sections, they are apart by my improved pins 4L. These pins 4 have forked ends 5 which are extended transversely wider than the normal diameter of the pin and are positioned against the wires of the sections, spacing the overlapping portions apart. While, am not limited to any particular number of these pins, I preferably use at least four, and of such a length that they provide a passage between the sections sufliciently large for a fly or similar insect to readily pass between the sections.

The pins 4 are located as near the sides of the screen as possible, so as to give an extended opening, the walls of which are parallel between the pins and incline at their ends to the sides of the frame. The pins are firmly held in position by means of wires 6 which are passed through the meshes of the sections and extended longitudinally of the pins, the ends of said wires being twist ed together as seen in Fig. 4. In other words, the wires 6 securely tie the wires of the screen mesh in the forked ends of the pins and prevent said wires from moving apart to release the pins, so that by this arrangement the sections are effectually held in posit-ion to provide an ample exit for the flies. Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claim.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

The combination with a frame, of wire mesh sections in said frame overlapping at their adjacent ends, pins positioned between spaced of course, I

the Wire mesh sections at their overlapping portions, said pins having fork shaped ends engaging the Wires of the mesh, and securing devices comprising Wire loops extending through the Wire mesh and longitudinally of the pins for holding the mesh in engagement With said forked ends, substantially :1

described. I V 1 In testimony whereof I have signed my name to this specificat10n 1n the presence 10 of two subscrlbing witnesses.

CARL VICTOR NILSSON.

Witnesses S. W'. FosTER, CHAS. E. POTTS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

